Johnsen, Alf Henry, 1899–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2319342A
- pdbooks.info ID: 87657
Alf Henry Johnsen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| The optical shop and counter | 1934 | Author | |  | |  | | 
| |